Wei Xu, PhD, teaches game programming and production, 3D math, and life drawing at the Art Institute of California—San Diego. He also teaches iOS game programming and drawing classes at University of California San Diego Extension. He is cofounder of Geomy Entertainment, LLC, a game-consulting firm. Xu was previously a lead engineer at Sony Computer Entertainment America for game technology R&D and a senior CG software engineer at Schlumberger Austin Technology Center.